Surprising Levels Of Ozone Pollution Found in Colorado Mountains

Looking to get away to the mountains of Colorado to breath clean air? Forget it, says a new research study.

Ozone-causing chemicals drifting into the mountains

Researchers have found surprising levels of air pollution along northern Colorado’s Front Ridge. The pollution contains harmful ozone and ozone-causing chemicals that are drifting into the mountains from both urban and rural areas.

"People (are) thinking you go into the mountains and you breathe the fresh air — that's not always the case," Gabriele Pfister, a scientist at the National Center for Atmospheric Research in Boulder and one of the principal investigators on the project,...